<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=806506
-->
<head>
  <title>Test for ShadowRoot style order</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<div id="container"></div>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=806506">Bug 806506</a>
<script>
// Create ShadowRoot.
var container = document.getElementById("container");
var elem = document.createElement("div");
container.appendChild(elem); // Put ShadowRoot host in document.
var root = elem.createShadowRoot();

// Style elements that will be appended into the ShadowRoot.
var tallShadowStyle = document.createElement("style");
tallShadowStyle.innerHTML = ".tall { height: 100px; }";

var veryTallShadowStyle = document.createElement("style");
veryTallShadowStyle.innerHTML = ".tall { height: 200px; }";

var divToStyle = document.createElement("div");
divToStyle.setAttribute("class", "tall");
root.appendChild(divToStyle);

// Make sure the styles are applied in tree order.
root.appendChild(tallShadowStyle);
is(root.styleSheets.length, 1, "ShadowRoot should have one style sheet.");
is(window.getComputedStyle(divToStyle, null).getPropertyValue("height"), "100px", "Style in ShadowRoot should apply to elements in ShadowRoot.");
root.appendChild(veryTallShadowStyle);
is(root.styleSheets.length, 2, "ShadowRoot should have two style sheets.");
is(window.getComputedStyle(divToStyle, null).getPropertyValue("height"), "200px", "Style in ShadowRoot should apply to elements in ShadowRoot in tree order.");

</script>
</body>
</html>
